MHA cringe is on the table :D

First one- Stain

We had talked about Stain having the ability to temporarily paralyze players in place so that he does as much damage as he can before it wears off. I think it should be a quirk skill so that as you level it up the longer the paralysis lasts (maybe a move where stain runs in and jabs to paralyze opponents) and the special action should be a spin dash upwards with his blade (similar to one of Hawks' quirk skill in his strike style and Amajiki's special action). Other than that, quirk skill a just throwing a series of blades much like Toga and Twice, and quirk skill b or y doing a heavy slash, but he should have "bleeding damage" effect as in drain a bit of health after his attacks. Although he should be a striker, my bud suggested him being a rapid instead (I do like it, adds a bit more rapid variety for the characters, but I'm still with strike style for Stain).

Second one - Gentle Criminal

We thought that Gentle would have a lot of possibilities for what he could do with his quirk in Ultra Rumble, so we agreed that he should have two styles, Technical and Support, both sharing the special action of La brava's love quirk which increases his overall damage for both melee and quirk skills. Technical would have his quirk skill a throw small barriers to not only damage opponents, but also push them back a bit, quirk skill b would have Gentle punch an enemy then bouncing them around with his barriers while doing damage, quirk skill y sandwiching/squeezing opponents once in front of him. Support style, quirk skill a has Gentle bounce on his barriers upwards and damaging players if close or above him, quirk skill b should be creating temporary shields in place also damaging players if directly hit with it (putting the shields wherever if you hold down the button and let go), and quirk skill y creating a dome for himself and allies that heals both bit of health and guard points while also blocking attacks from enemies outside of the dome (works in %, the higher the damage, the more it drains the quirk skill)

And despite everything and the suit, I still think Izuku isn't obligated or owes Bakugo in joining his agency if he was truly against it (which a lot of people use to reason why it doesn't make sense). Although he did say "not right now," so he could later on if he desires.